/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.sql.parser.hive.ddl;

import org.apache.flink.sql.parser.ddl.SqlTableOption;

import org.apache.calcite.sql.SqlCharStringLiteral;
import org.apache.calcite.sql.SqlIdentifier;
import org.apache.calcite.sql.SqlLiteral;
import org.apache.calcite.sql.SqlNodeList;
import org.apache.calcite.sql.SqlWriter;
import org.apache.calcite.sql.parser.SqlParserPos;

import static org.apache.flink.sql.parser.hive.ddl.SqlCreateHiveDatabase.DATABASE_LOCATION_URI;

/**
 * ALTER Database location DDL for Hive dialect.
 */
public class SqlAlterHiveDatabaseLocation extends SqlAlterHiveDatabase {

	private final SqlCharStringLiteral location;

	public SqlAlterHiveDatabaseLocation(SqlParserPos pos, SqlIdentifier databaseName, SqlCharStringLiteral location) {
		super(pos, databaseName, new SqlNodeList(pos));
		getPropertyList().add(new SqlTableOption(
				SqlLiteral.createCharString(DATABASE_LOCATION_URI, location.getParserPosition()),
				location,
				location.getParserPosition()));
		this.location = location;
	}

	@Override
	protected AlterHiveDatabaseOp getAlterOp() {
		return AlterHiveDatabaseOp.CHANGE_LOCATION;
	}

	@Override
	public void unparse(SqlWriter writer, int leftPrec, int rightPrec) {
		super.unparse(writer, leftPrec, rightPrec);
		writer.keyword("LOCATION");
		location.unparse(writer, leftPrec, rightPrec);
	}
}
